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1 ds04-27202-3e fujitsu semiconductor data sheet assp switching regulator controller MB3769A the fujitsu MB3769A is a pulse-width-modulation controller which is applied to fixed frequency pulse modulation technique. the MB3769A contains wide band width op-amp and high speed comparator to construct very high speed switching regulator system up to 700 khz. output is suitable for power mos fet drive owing to adoption of totem pole output. the MB3769A provides stand-by mode at low voltage power supply when it is applied in primary control system. high frequency oscillator (f = 1 to 700 khz) on-chip wide band frequency operation amplifier (bw = 8 mhz typ.) on-chip high speed comparator (td = 120 ns typ.) internal reference voltage generator provides a stable reference supply (5 v 2%) low power dissipation (1.5 ma typ. at standby mode, 8 ma typ. at operating mode) output current 100 ma ( 600 ma at peak) high speed switching operation (tr = 60 ns, tf = 30 ns, c l = 1000 pf typ.) adjustable dead-time on-chip soft start and quick shut down functions internal circuitry prohibits double pulse at dynamic current limit operation under voltage lock out function (off to on: 10 v typ. on to off: 8 v typ.) on-chip output shut down circuit with latch function at over voltage on-chip zener diode (15 v) plastic dip 16-pin (dip-16p-m04) plastic fpt 16-pin (fpt-16p-m06) this device contains circuitry to protect the inputs against damage due to high static voltages or electric fields. however, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit.
2 MB3769A n pin assignment n absolute maximum ratings (see note) * :duty 5% ** : t a = 25 c *** : t a = 25 c, fpt package is mounted on the epoxy board. (4 cm x 4 cm x 0.15 cm) note : permanent device damage may occur if the above absolute maximum ratings are exceeded. functional operation should be restricted to the conditions as detailed in the operational sections data sheet. exposure to absolute maximum rating conditions for extended periods may affect device reliability. rating symbol value unit power supply voltage v cc 20 v output current i out 120 (660*) ma operation amp. input voltage vin (op) v cc + 0.3 ( 20) v power dissipation: dip : fpt p d 1000** mw p d 620*** mw operating temp. : dip : fpt t op -30 to +85 c t op -30 to +75 c storage temp. t stg -55 to +125 c (top view) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 +in (op) -in (op) fb dtc c t r t gnd v l +in (c) -in (c) v ref ovp v cc v z v h out
3 MB3769A n n n n block diagram + - + - - + + + + + + - - + s r q s r q tr i a n g l e wa v e oscillator over voltage detector - + reference regulator + - power off 2.5 v 1.5 v to 3.5 v (2.5 v) 15.4 v 30 k w 5.0 + 0.1 v 8/10 v stb over current detection comparator pwm comparator 1.85 v 1.8 v stb stb v ref v h v l v ref out error amp. dtc fb -in (op) ovp c t r t v cc v z gnd fig. 1 - MB3769A block diagram 16 4 3 1 2 13 5 6 12 11 7 14 8 9 10 15 -in (c) +in (c) +in (op)
4 MB3769A n recommended operating condition parameter symbol dip package fpt package unit min typ max min typ max power supply voltage v cc 12 15 18 12 15 18 v output current (dc) i out -100 - 100 -100 - 100 ma output current (peak) i out peak -600 - 600 -600 - 600 ma operation amp. input voltage v inop -0.2 0 to v ref v cc -3 -0.2 0 to v ref v cc -3 v fb sink current i sink --0.3--0.3ma fb source current i source --2--2ma comparator input voltage v inc + -0.3 0 to 3 v cc -0.3 0 to 3 v cc v v inc - -0.3 0 to 2 2.5 -0.3 0 to 2 2.5 v reference section output current i ref - 5 10 - 2 10 ma timing resistor r t 9185091850k w timing capacitor c t 100 680 10 6 100 680 10 6 pf oscillator frequency f osc 1 100 700 1 100 700 khz zener current i z --5--5ma operating temp. t op -30 25 85 -30 25 75 c
5 MB3769A n n n n electrical characteristics (v cc =15v, t a =25 c) parameter symbol condition value unit min typ max reference section output voltage v ref i ref = 1 ma 4.9 5.0 5.1 v input regulation d vr in 12 v v cc 18 v - 2 15 mv load regulation d vr ld 1 ma i ref 10 ma - -1 -15 mv temp. stability d vr temp -30 c t a 85 c - 200 750 m v/ c short circuit output current i sc v ref = 0 v 15 40 - ma oscillator section oscillator frequency f osc rt=18 k w ct=680 pf 90 100 110 khz voltage stability d f oscin 12 v v cc 18 v - 0.03 - % temp. stability d f osc / d t-30 c t a 85 c- 2 -% dead -time control section input bias current i d -210 m a max. duty cycle dmax vd = 1.5 v 75 80 85 % duty cycle set dset vd = 0.5 v ref 45 50 55 % input threshold voltage 0% duty cycle v do --3.53.8v max. duty cycle v dm - 1.55 1.85 - v discharge voltage v dh v cc = 7 v, i dtc = -0.3 ma 4.5 - - v error amplifier section input offset voltage v io (op) v 3 = 2.5 v - 2 10 mv input offset current i io (op) v 3 = 2.5 v - 30 300 na input bias current i ir (op) v 3 = 2.5 v -1 -0.3 - m a common-mode input voltage v cm (op) 12 v v cc 18 v -0.2 - v cc -3 v voltage gain a v (op) 0.5 v v 3 4 v 70 90 - db band width bw a v = 0db - 8 - mhz slew rate sr r l = 10 k w , a v = 0db - 6 - v/ m s common-mode rejection rate cmr v in = 0 to 10 v 65 80 - db h level output voltage v oh i 3 = -2 ma 4.0 4.6 - v l level output voltage v ol i 3 = 0.3 ma - 0.1 0.5 v
6 MB3769A n n n n electrical characteristics (continued) * : v cc = 8v (v cc =15v, t a =25 c) parameter symbol condition value unit min typ max current comparator input offset voltage v io (c) v in = 1 v - 515mv input bias current i ib (c) v in = 1 v -5 -1 - m a common-mode input volt- age v cm (c) -0-2.5v voltage gain a v (c) --200-v/v response time td 50 mv over drive - 120 250 ns pwm comparator section 0% duty cycle v opo r t = 18 k w c t = 680 pf -3.53.8v max. duty cycle v opm 1.55 1.85 - v output section h level output voltage v h i out = -100 ma 12.5 13.5 - v l level output voltage v l i out = 100 ma - 1.1 1.3 v rise time tr c l = 1000 pf, r l = - 60 120 ns fall time tf c l = 1000 pf, r l = -3080ns over voltage detector threshold voltage v ovp - 2.4 2.5 2.6 v input current i iovp v in = 0 v -1.0 -0.2 - m a v cc reset v cc rst - 2.0 3.0 4.5 v under volt- age out stop off to on v thh - 9.2 10.0 10.8 v on to off v thl - 7.2 8.0 8.8 v supply current standby * i stb rt = 18 k w 4 pin open -1.52.0ma operating i cc r t = 18 kw - 8.0 12.0 ma zener voltage v z i z = 1 ma - 15.4 - v zener current i z v 11-7 = 1 v - 0.03 - ma
7 MB3769A fig. 2 - MB3769A test circuit 16 15 14 13 12 11 10 9 12345678 +in (c) -in (c) v ref ovp v cc v z v h out +in (op) -in (op) fb dtc c t r t gnd v l v fb v dtc MB3769A comp in 1.0 v 15.0 v output 10 k w 18 k w 680 pf test input 1000 pf 90% 10% 50% tf td tr 1.05 v 1.0 v 3.5 v typ. 1.5 v typ. voltage at c t comp in output 0.95 v tr of comp-in should be within 20 ns.
8 MB3769A soft start operation quick shutdown operation 3.5 v 1.5 v 1.85v (15 v) 10 v (typ.) 2.5 v (1 v) 3 v 8 v (typ.) standby mode over voltage detector latch off standby mode over current detector over voltage detector 0 v dead-time input voltage triangle wave form error amp. output pwm comparator output output wave form comp. current -in wave form comp. current +in wave form comp. current latch output voltage at ovp ovp latch power supply voltage fig. 3 - MB3769A operating timing
9 MB3769A n n n n functions 1. error amplifier the error amplifier detects the output voltage of the switching regulator. the error amplifier uses a high-speed operational amplifier with an 8 mhz bandwidth (typical) and 6 v/ m s slew rate (typical). for ease of use, the common mode input voltage ranges from -0.2 v to v cc -3 v. figure 4 shows the equivalent circuit. 2. overcurrent detection comparator there are two methods for protection of the output transistor of this device from overcurrents; one restricts the transistors on- time if an overcurrent that flows through the output transistor is detected from an average output current, and the other detec ts an overcurrent in the external transistor (fet) and shuts the output down instantaneously. using average output currents, the peak current of the external transistor (fet) cannot be detected, so an output transistor with a large safe operation area (soa ) margin is required. for the method of detecting overcurrents in the external transistor (fet), the output transistor can be protected against a sho rted filter capacitor or power-on surge current. the MB3769A uses dynamic current limiting to detect overcurrents in the output transistor (fet). a high-speed comparator and flip-flop are built-in. to detect overcurrents, compare the voltage at +in (c) of current detection resistor connected the source of the output transistor (fet), with the reference voltage (connected to -in (c) ) using a comparator. to prevent output oscillation during overcurrent, flip-flop circuit protects against double pulses occurring within a cycle. the output of overcurrent detector is ored with other signals at the pwm comparator. see the example application example for details on use. figure 5 shows the equivalent circuit of the over-current detection comparator. fig. 4 - MB3769A equivalent circuit differential amp. v cc gnd -in (op) +in (op) 150 w 700 m a v ref to p w m comp. protection element
10 MB3769A 3. dtc: dead time control (soft-start and quick shutdown) the dead time control terminal and the error amplifier output are connected to the pwm comparator. the maximum duty cycle for v dtc (voltage applied to pin 4) is obtained from the following formula (approximate value at low frequency): duty cycle = (3.5 - v dtc ) x 50 (%) [0% duty cycle d max (80%) ] the dead time control terminal is used to provide soft start. in figure 6, the dtc terminal is connected to the v ref terminal through r and c. because capacitor c does not charge instantaneously when the power is turned on, the output transistor is kept turned off. the dtc input voltage and the output pulse width increase gradually according to the rc time constant so that the control system operates safely. the quick shutdown function prevents soft start malfunction when the power is turned off and on quickly. after the power is sh ut down, soft start is disabled because the dtc terminal has low electric potential from the beginning if the power is turned on again before the capacitor is discharged. the MB3769A prevents this by turning on the discharge transistor to quickly discharg e the capacitor in the stand-by mode. fig. 5 - MB3769A equivalent circuit over current detection comparator protection element +in (c) v ref to p w m comp. -in (c) fig. 6 - MB3769A soft start function v ref dtc c r soft start v ref dtc cr 1 soft start + dtc r 2
11 MB3769A 4. triangular wave oscillator the oscillation frequency is expressed by the following formula: for master/slave synchronized operation of several MB3769As, the c t and r t terminals of the master MB3769A are connected in the usual way and the c t terminals of the master and slave device (s) are connected together. the slave MB3769As r t terminal is connected to its v ref terminal to disable the slaves oscillator. in this case, set 50/n k w (n is the number of master and slave ics) to the upper limit of r t so that internal bias currents do not stop the master oscillation. 5. overvoltage detector the overvoltage detection circuit shuts the system power down if the switching regulators output voltage is abnormal or if abnormal voltage is appeared. the reference voltage is 2.5 v (v ref /2). the system power is shut down if the voltage at pin 13 rises above 2.5 v. the output is kept shut down by the latching circuit until the power supply is turned off (see figure 3) . 6. stand-by mode and under-voltage lockout (uvlo) generally, v gs > 6 to 8 v is required to use power mosfet for switching. uvlo is set so that output is on at v cc 3 10 v (standard) when the power is turned on and is off at v cc 8 v (standard) when the power is turned off. in the stand-by mode, the power supply current is limited to 2 ma or less when the output is inhibited by the uvlo circuit. wh en the MB3769A is operated from the 100 vac line, the power supply current is supplied through resistor r (figure 8). that is, th e ic power supply current is supplied by the ac line through resistor r until operation starts. current is then supplied from th e transformer tertiary winding, eliminating the need for a second power supply. two volts (typical) of hysteresis are provided for return from operation mode to stand-by mode not to return to stand-by mode until output power is turned on or to avoid malfunction due to noise. [khz] f osc ~ : m f 0.8 x c t x r t + 0.0002 ms :k w 1 c t r t fig. 7 - MB3769A synchronized operation master r t c t slave v ref r t c t
12 MB3769A 7. output section because the output terminal (pin 9) carries a large current, the collector and emitter of the output transistor are brought out to the v h and v l terminals. in principle, v h is connected to v cc and v l is connected to gnd, but v h can be supplied from another power supply (4 to 18 v). note that v l and gnd should be connected as close to the ic package as possible. a capacitor of 0.1 m f or more is inserted between v h and v l (see figure 9). fig. 8 - MB3769A primary control MB3769A c r fig. 9 - MB3769A typical connection circuit of output 10 9 3 0.1 m f 12 78
13 MB3769A n n n n application example overcurrent protection circuit the waveform at the output fet source terminal is shown in figure 11. the rc time constant must be chosen so that the voltage glitch in the waveform does not cause erroneous overcurrent detection. this time constant is should be from 5 to 100 ns. a detection current value depends on r or c because a waveform is weakened. to keep this glitch as small as possible, the rectifiers on the transformer secondary winding must be the fast-recovery type. fig. 10 - MB3769A dc - dc convertor MB3769A +in (c) 16 in (c) 15 v ref 14 ovp 13 v cc 12 v z 11 v h 10 out 9 0.1 m f 20 k w 10 k w r c 100 k w 330 pf 3.3 k w 220 pf 51 k w 18 k w 10 k w 5.1 k w 1 w s 5 v 1 a 3.6 k w 2.4 k w 12 to 18 v 1+in (op) 2-in (op) 3fb 4dtc 5c t 6r t 7gnd 8v l fig. 11 - MB3769A output fet source point glitch point s waveform
14 MB3769A 100 vac r 22 k w 4.7 m f 22 k w 680 pf 18 k w 10 k w 15 k w 22 w * 47 k w +in (op) -in (op) fb dtc c t r t gnd +in (c) -in (c) v ref ovp v cc v z v h 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 * :the resistance (22 w ) as an output current limiter at pin 9 is re- quired when driving the fet which is more than 1000 pf (cgs). - + fig. 12 -primary control - + 43 k w 51 k w 680 pf 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 +in (op) -in (op) fb dtc c t r t gnd v l +in (c) -in (c) v ref ovp v cc v z v h out secondly power supply 15 v 0 v 10 k w 18 k w 5.1 k w 39 k w 27 k w 10 k w 12 v 1000 pf fig. 13 -secondly control
15 MB3769A n n n n short protection circuit the system power can be shut down to protect the output against intermittent short-circuits or continuous overloads. this protection circuit can be configured using the ovp input as shown in figure 14. MB3769A 9 14 13 7 1 m f pc1 100 k w 10 k w 20 k w pc2 8 5 3 4 16 v 0 (5v output) pc2 pc1 out-b 500 w hys-a 500 w mb3761 15 k w in-b 8.2 k w in-a 6.8 k w fig. 14 -case i. (over protection input) primary mode MB3769A 14 13 ovp v ref mb3761 8 5 3 6 12 in-a in-b 15 k w 8.2 k w 6.8 k w out-b hys-a 200 k w 1 m f 20 k w v 0 (5v output) fig. 15 -case ii. (over protection input) secondly mode
16 MB3769A n n n n how to synchronize with outside clock the MB3769A oscillator circuit is shown in figure 16. c t charge and discharge currents are expressed by the following formula: this circuit shows that if the voltage at the c t terminal is set to 1.5 v or less, one oscillation cycle ends and the next cycle starts. an example of an external synchronous clock circuit is shown in figure 17. 5 v r t i ct = 2 x i 1 = v ref 2.5 v r t - + + - - + s r q 3.5 v 1.5 v 2 x i 1 2 x i 1 1 k w 500 w 500 w 300 w 150 w i 1 i ct c t (4 x i 1 ) 6 5 fig. 16 -oscillator circuit 5 6 MB3769A r t c t r(5.1 k w ) v p ex. mb74hc04 clamp circuit (v l ) v p t p t cycle t cycle = 2.5 m s (f ext = 400 khz) t p = 0.5 m s r t = 11 k w fig. 17 -typical connection of synchronized outside clock circuit t p v l v ct 1.85 3.5 v v th ( 2.5 v) . . fig. 18 -voltage waveform at c t the figure 18 shows the c t terminal waveform. v th may be near 2.5 v. in this case, the maximum duty cycle is restricted as shown in the formula below if t p = 0. d max = 59% (v l = 0 v: no clamp circuit) (3.5 - 1.85) + (3.5 - v th ) (3.5 - v l ) + (3.5 - v th ) when v th = 2.5 v, c t can be provided by followings. t cycle - t p =x (3.5 - v l ) + (3.5 - v th ) f osc (3.5 - 1.5 ) x 2 f osc 1
17 MB3769A make v l high for a large duty cycle for the clamp circuit. the circuits below can be used because the clamp voltage must be much lower than 1.5 v. in circuit a, r 1 and r 2 must be determined considering the effects of t p , r, or r t . the transistor saturation voltage must be very small (<0.15 v) for any clamp circuit, so a transistor with a very small v ce (sat) should be used. c t ~ x(t cycle - t p ) [pf] (r t : k w , t cycle , t p : ns) 14 0.8 x r t 4.5 - v l f osc ~ 1 0.8 x c t x r t 0.1 m f r 2 (1.2 k w ) (1.2 v) r 1 (4.7 k w ) v ref a (1.2 v) 0.1 m f 820 w v ref 8 5 3 4 mb3761 b fig. 19 -clamp circuit
18 MB3769A n n n n synchronized outside clock circuit 5 pin c t 150 pf 5.1 k w v p mb74hc04 1.no clamp circuit (connect with gnd) c t = 150 pf + prove capacitor (~ 15 pf) r t = 11 k w 2.clamp circuit a (dividing resistor) c t = 220 pf + prove capacitor (~ 15 pf) r t = 11 k w 5 pin c t 220 pf 5.1 k w mb74hc04 v p 4.7 k w 1.2 k w 0.1 m f 3.clamp circuit b (apply mb3761) c t = 220 pf + prove capacitor (~ 15 pf) r t = 11 k w 5 pin c t 220 pf 5.1 k w v p mb74hc04 0.1 m f v ref 820 w 8 5 4 3 v ref mb3761 v p (5 v/div) c t (1 v/div) out (10 v/div) gnd level (c t ) v p (5 v/div) c t (1 v/div) gnd level (c t ) out (10 v/div) v p (5 v/div) c t (1 v/div) gnd level (c t ) out (10 v/div) fig. 20 fig. 21 fig. 22 10 v 1 v 500 ns 5 v 10 v 1 v 500 ns 5 v 10 v 1 v 500 ns 5 v
19 MB3769A 1 2.4 k w 11 k w MB3769A 2.5 v out 2.4 k w 15 v (v cc ) 2 3 4 5 6 14 15 16 9 7813 12 10 fig. 23 -test circuit
20 MB3769A n n n n typical performance characteristics 10.0 8.0 6.0 4.0 2.0 0.0 0.0 4.0 8.0 12.0 16.0 20.0 fig. 24 -power supply current vs. power supply voltage (low voltage stop of v cc ) 2 1 0 -30 02550 85 fig. 25 -standby current vs.temp. ovp operating v 13 = 5 v normal operating v 13 = 0 v v cc = 8 v power supply voltage v cc (v) ovp operating te m p . t a ( c) fig. 26 -reference voltage vs. temp. fig. 27 -l level output voltage vs. l level output current v cc = 15 v t a = 25 c 3 2 1 00.20.40.60.8 l level output current i ol (ma) v cc = 15 v i ref = 1 ma 5.1 5.0 4.9 0 -30 0 25 50 85 750 m v/c temp. t a ( c) 5 4 3 2 1 0 24 6 8 10 v cc = 15 v t a = 25 c h level output current i oh (ma) fig. 28 -h level output voltage vs. h level output current power supply current i cc (ma) reference voltage v ref (v) h level output voltage v oh (v) standly current i stb (ma) l level output voltage v ol (v)
21 MB3769A n n n n typical performance characteristics (continued) 700 500 400 300 200 100 50 20 710 2030405070 fig. 29 -oscillator frequency vs. r t , c t fig. 30 -h, l level output voltage vs. oscillator frequency c t = 100 pf c t = 220 pf c t = 680 pf c t = 1000 pf c t = 2200 pf 4 3 2 1 0 20 k 50 k 100 k 200 k 500 k 1 m v h v l v h v l fig. 31 -duty cycle vs. dead time control voltage fig. 32 -oscillator frequency vs. temp. fig. 33 -dead time control voltage vs. current(standby mode) -4 -2 0 2 4 v cc = 15 v 100 khz 300 khz 500 khz target f osc = 100 khz 2 % typ. f osc = 200 khz f osc = 500 khz v cc = 15 v c t = 1000 pf t a = 25 c 5.0 4.0 3.0 2.0 v cc = 7 v t a = 25 c 1.0 0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 100 80 60 40 20 0 01 234 5 r t (k w ) frequency f osc (hz) te m p . t a ( c) -30 0 25 50 85 dead time control voltage v dtc (v) dead time control current i dtc (ma) v cc = 15 v t a = 25 c oscillator frequency f osc (khz) dead time control voltage v dtc (v) h, l level output voltage v h , v l (v) oscillator frequency f osc (%) duty cycle (%) 40 30 60 80 90 70 60 89
22 MB3769A n n n n typical performance characteristics (continued) fig. 34 -gain/phase vs. frequency (set gv = 60 db) v cc = 15 v t a = 25 c gain phase 60 40 20 0 10 k 100 k 1 m 10 m -180 -240 -300 -360 f osc = 500 khz f osc = 200 khz v cc = 15 v c l = 1000 pf v dtc = 2.5 v fig. 35 -duty cycle vs. temp. 55 50 45 0 -30 0 25 50 85 fig. 36 -l level output voltage vs. l level output current v cc = 15 v t a = 25 c fig. 38 -tr/tf of output and td of comparator vs. temp. 160 140 120 100 80 60 40 20 0 -30 0 -25 50 85 v cc = 15 v c l = 1000 pf td tr tf fig. 37 -h level output voltage vs. h level output current 1.5 1.0 0.5 0 0 100 200 300 400 500 600 14.0 13.5 13.0 12.5 0 0 100 200 300 400 500 600 frequency f (hz) te m p. t a ( c) l level output current i ol (ma) h level output current i oh (ma) v cc = 15 v t a = 25 c te m p. t a ( c) gain (db) l level output voltage v ol (v) h level output voltage v oh (v) phase (deg) duty cycle (%) tr/tf/td (ns)
23 MB3769A n n n n typical performance characteristics (continued) 6 5 4 3 2 -40 -20 0 20 40 60 80 100 fig. 39 -ovp latch standby power supply current vs. temp. v cc = 8 v 4 pin open 13 pin = 3 v te m p. t a ( c) fig. 40 -ovp supply voltage reset vs. temp. -40 -20 0 20 40 60 80 100 te m p . t a ( c) 5 4 3 2 1 0 standby power supply current (ma) ovp supply voltage reset (v) 0
24 MB3769A .010 .002 dimensions in inches (millimeters) 16-lead plastic dual in-line package (case no.: dip-16p-m04) ? 1990 fujitsu limited d160335-2c-2 .770 +.008 -.012 (19.55 ) +0.20 -0.30 .039 +.012 -0 (0.99 ) +0.30 -0 .244 .010 (6.20 0.25) index-1 .100(2.54) typ .050(1.27) max .020(0.51)min .172(4.36)max .118(3.00)min .300(7.62) typ 15 max .060 +.012 -0 (1.52 ) +0.30 -0 index-2 (0.25 0.05) .018 .003 (0.46 0.08)
25 MB3769A dimensions in inches (millimeters) a 16-lead plastic flat package (case no.: fpt-16p-m06) ? 1991 fujitsu limited f16015s-2c .400 +.010 -.008 (10.15 ) +0.25 -0.20 .209 .012 (5.30 0.30) index .004(0.10) .050(1.27) typ .018 .004 (0.45 0.10) ? .005(0.13) .307 .016 (7.80 0.40) .002(0.05)min (stand off height) .089(2.25)max (mounting height) .006 +.002 -.001 (0.15 ) +0.05 -0.02 .020 .008 (0.50 0.20) .027(0.68) max .007(0.18) max .008(0.20) .016(0.40) details of a part m .350(8.89) ref b .268 +.016 -.008 (6.80 ) +0.40 -0.20 .027(0.68) max .007(0.18) max .006(0.15) details of b part .008(0.20)
MB3769A fujitsu limited for further information please contact: japan fujitsu limited corporate global business support division electronic devices kawasaki plant, 1015, kamikodanaka nakahara-ku, kawasaki-shi kanagawa 211, japan tel: (044) 754-3753 fax: (044) 754-3329 north and south america fujitsu microelectronics, inc. semiconductor division 3545 north first street san jose, ca 95134-1804, u.s.a. tel: (408) 922-9000 fax: (408) 432-9044/9045 europe fujitsu mikroelektronik gmbh am siebenstein 6-10 63303 dreieich-buchschlag germany tel: (06103) 690-0 fax: (06103) 690-122 asia pacific fujitsu microelectronics asia pte. limited no. 51 bras basah road, plaza by the park, #06-04 to #06-07 singapore 189554 tel: 336-1600 fax: 336-1609 f9601 ? fujitsu limited printed in japan all rights reserved. circuit diagrams utilizing fujitsu products are included as a means of illustrating typical semiconductor applications. com- plete information sufficient for construction purposes is not nec- essarily given. the information contained in this document has been carefully checked and is believed to be reliable. however, fujitsu as- sumes no responsibility for inaccuracies. the information contained in this document does not convey any license under the copyrights, patent rights or trademarks claimed and owned by fujitsu. fujitsu reserves the right to change products or specifications without notice. no part of this publication may be copied or reproduced in any form or by any means, or transferred to any third party without prior written consent of fujitsu. the information contained in this document are not intended for use with equipments which require extremely high reliability such as aerospace equipments, undersea repeaters, nuclear con- trol systems or medical equipments for life support.

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